用JavaScriptRegex實現Email驗證

來源:互聯網
上載者:User
     function checkEmail()
   {
    var reg = /\w+[@]\w+[.]\w+/;
    var r = /[@]/;
    var e = /[.]/;
    
    var s_r = 0;
    var s_e = 0;
    var s_rCount = 0;
    var s_eCount = 0;
    
    var str;
    
     str = document.all("test").value;
   
    while(true)
    {
     s_r = str.search(r);
     
     if(s_r != -1)
      s_rCount ++;
     else
      break;
      
     str = str.substring(s_r + 1,str.length);
    }
   
     str = document.all("test").value;
    
    while(true)
    {
     s_e = str.search(e);
     
     if(s_e != -1)
      s_eCount ++;
     else
      break;
      
     str = str.substring(s_e + 1,str.length);
    }
    
     str = document.all("test").value;
    
    var s = str.search(reg);
    
    alert(s);
    alert(s_rCount);
    alert(s_eCount);
    
    if(s == 0 && s_rCount == 1 && s_eCount == 1)
     alert("true");
    else
     alert("false");  
   }
相關文章

聯繫我們

該頁面正文內容均來源於網絡整理,並不代表阿里雲官方的觀點,該頁面所提到的產品和服務也與阿里云無關,如果該頁面內容對您造成了困擾,歡迎寫郵件給我們,收到郵件我們將在5個工作日內處理。

如果您發現本社區中有涉嫌抄襲的內容,歡迎發送郵件至: info-contact@alibabacloud.com 進行舉報並提供相關證據,工作人員會在 5 個工作天內聯絡您,一經查實,本站將立刻刪除涉嫌侵權內容。

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.